Variable directional mouthpiece for ejectors



Fuy 23, 1935. P. J. MARCHAUT VARIABLE DIRECTIONAL MOUTHPIECE FOR EJECTORS Filed March 6, 1934 2 Sheets-Sheet 1 PIERRE JEAN MARCHAUT y A l NVE NTOR BYMw/,MfU/gw ATTORNEYS' July 23, 1935. P. J. MARCHAUT VARIABLE DIRECTIONAL MOUTHPIECE FOR EJEGTORS Filed March 6, 1954 2 Sheets-Sheet 2 PIERRE JEAN MARCHAUT l INVENTOR BY/@uwpZ/M.

ATTG RN EYS Patented July 23, 1935 VARIABLE DIno'rIoNAL MoU'rHPIECEjFoR jj'EJEoToRs i Pierre Jean Marchaut, Paris, France I Y Appii'cafion Mar'ii, 1934,' serial Ne. 714,215

, In FranceJanu'ary ,13, 1934' 6 Claims. (C1. 299-130) The lsubject of this 'invention is a variable di-v rectional mouthpiece for an ejectorAfor the distribution of bodies or substances, or mixtures of substanceawhich can be used, Yfor example, as a lire extinguishing device of. the type in which one or more ejectors are suitably arranged to'distrib ute an extinguishing body'` or substance, in any appropriate physical state, in the vform of a conical sheet having a suitable apex angle, this continuous .conical sheetforming a sort of extinguishen. ,l

, It comprises Vthe combinationof a ,nozzle and a valve of vappropriate profile, one orother or both of'them lbeingsusceptible*to Adeformation vin `a suitable manner vand'moli/.able relative to one another in lsuch ,away as to form,.according to their relative position, a` variable directional mouthpiece gwhich permits the distribution of a reextinguishing medium, body. substance onof a mixture of substances, inthe formconical sheet for example, having a variable apex angle, with the. object of ensuring the distribution of a suitable. extinguishing substance, thus i constituting ,a

refextinguishing ldevice-1 1 the attached drawings., which represent, `by wayfofan example-of realization'of the invention, oneliorm otconstruction of .an ejector with ,variable directional mouthpiece:- .Figt 1; shows the nozzle Aof the valveingthe rest position, Y. y V,-Figs; 2, 3 .andgi showrthefejectorfin different phases of operation,`

ejector and vits Fig. 5 shows YAdiagramma ically vrfaniexarnple vvof 1 the use of the ejector, y

Eissl toz. showla. yariationrig. 7 being a seetion of VII-VII of Fig. 6. Y

According to the constructional example of the invention shown, the body I of the ejector, cylindrical for example, terminates in a nozzle 2 of variable internal section flaring or, suitably bellmouthed, a valve 3 capable Aof being deformed and held by a tie piece or retaining member 4, for example, rigid or otherwise, and making contact at its periphery 9 with the internal flaring surface of the nozzle 2.

'Ihe body is, naturally, connected by any appropriate means to a reservoir containing a substance or a mixtureA of substances, fluid, gas or other suitable ones, stored under suitable pressure and which can be distributed for fighting a ire.

The ejector is used in the following manner:-

The valve 3 being held by the retaining member 4 in the position of Fig. l, if the substance to be distributed is admittedinto the ejector in a suitable physical condition, fluid, gaseous, powangle.

dered, in foam, or in a mixture, it :exerts a -pressure on the valve 3, the edges 9 of which ybecome deformed and are no longer in contact withgthe nozzle 2. A .passage is thus created betweenythese elements, which forms .the directional mouthpiece 5. When the Valve 3 is in the positionof ,Figi ,l or 2, .the mouthpiece 5 is'such that, as can lbeseen from Fig. 2, the substance is distributed in Ithe form ofa conical sheet 6 having avery wide'apex Y, If, by means of the retaining member vv4, the valve 3 is displaced injthe nozzle V2, bytaking it fori-example, to the positionindioated Eig., 3, this valve becomes deformed;y while'still tending to make contact `with the internal surface ofthe nozzle 2 but owing .to the pressureof the fluid coming Ainto the ejector, a mouthpiece l fis again formedqbetween `the .-internalsurfaceof the nozzleand theedges f9 of thejvalve.` `Asyvill beseen, Athe .conical vsheet 8V Ainto which the fluid is distrbuted, .has a Smaller apexansle `thaninFie.. Finally, if tthe valve Ais brought by ,aXiaLdisplacement into the position ,of Fig. 4J rin whichzits periphery V,9 comes against the cylindrical part ofthe body of thev ejector, Vthe mouthpiece I9 which-is 'then formed, causesnthe .distribution/,of thefluid in the shapenfa sheet -|l `sensibll7 :Stylindrical. Y It will Vthus -be seen that bythe simple move.: ment ofthe valve ,3 .:(which .can be deformed) along the'nozzle )2of the ejector, the distribution oft-he fluid Projected can be effectedin form Qf za-.conical sheet whose apex angleis fv able between any desired limits. The ejctormay also :be :formedeinaocord,nce with the variations indicated in Figs. 6 to 8; the nozzle 2 of the ejector carries ribs, projections or strips I5, longitudinal or otherwise, and ofV predetermined size, against which bears the edge 9 of the valve 3, Which no longer bears directly on the actual interior surface of the nozzle, and as a result, there is always a passage existing between the valve and the nozzle, forming a directional mouthpiece, and the fluid which flows out is not compelled to create the mouthpiece 5, 1, or I Il for itself in order to pass. The shape and the 'arrangement of the strips l5 may be suitably designed to ensure at the same time the guiding of the fluid distributed, These strips could, of course, be arranged on the valve 3, on the nozzle and the valve, or even be replaced by any device enabling an annular passage to be maintained between thenozzle and the valve.

The valve 3 can be constructed in any desired manner and can be made, for example, of elastic rubber, it being possible to return this valve to its original shape, that of Fig. 1, after use.

On the other hand, a device can be provided for returning the valve 3 to its original position, it being possible to effect this return automatically by means of a spring, counterweight or the like, or again by the action of the fluid distributed itself on the valve or on a suitable device.

This valve could also be constructed of a metal susceptible of being deformed, elastically or otherwise, subject always to the condition that the valve 3, during its displacement in the flaring nozzle 2, maintains a profile corresponding to that of the nozzle.

Again, the nozzle itself could be made so that it could be deformed, and not the valve 3, the variation in the mouthpiece formed by the nozzle and its valve being then obtained by the variation of shape of the nozzle itself under the influence of the displacement of the valve, which latter might also be so formed that it could be more or less deformed.

In' Fig. 5 is shown diagrammatcally a method of applying the ejector when used as a fire extinguishing device and applied to a chamber, ships cabin or the like.

The ejector l is fixed to the upper part of the chamber l2, in its centre for example, in such a Way that by simple operation of the apparatus the extinguishing body can be distributed in the form of'a conical sheet having a variable apex angle, which reaches to all parts of the chamber. The actuation of the valve 3 could naturally take place from the outside by any suitable control I3.

The device arranged in this manner thus permits the distribution of any desired extinguishing body, in any suitable physical state, simple or in a mixture, in the form of a conical sheet which, forming a surface which is sensibly airtight, constitutes a sort of extinguishing cap which isolates the zone contained inside the sheet from the exterior atmosphere, In this Way it is possible to distribute, for example, aneXtinguiShing medium in the form cfa powder carried by a gas, preferably inert, such as carbonio anhydride, for example; this gas then rapidly replacing the air contained in the cone limited bythe sheet, contributes largely to the efficiency of the device used as a fire extinguisher. The iire is attacked simultaneously'by the suppression of air required for combustion and. by the sprinkling with the extinguishing powder or other'suitable substance, which can act Adirectly on the burning material itself.

The invention is applicable to fire extinguishing devices and also to the distribution, medium or any body of substance for all purposes.

What I claim is:-

1. A variable directional ejector mouthpiece for a fire extinguishing device, comprising in combination, a nozzle and a valve member therefor forming a pair of cooperating members, of Which pair onemember is movable with respect to the other and deformable to produce, according to their relative positions, an ejected conical sheet of fire extinguishing medium having a variable apex angle, Yand means for moving said one member.

2. A variable directional ejector mouthpiece for a fire extinguishing device, comprising in combination, a nozzle and a valve member therefor forming a pair of cooperating deformable members, of which pair one member is movable with respect to the other so as to produce, according to their relative positions, Aan ejected conical sheet of re extinguishing mediumy having a variable apex angle, and means for moving said one member.

3. A variable directional ejector mouthpiece according to claim 1, wherein one end of the nozzle is ared while the valve member is capable of being drawn toward and into the flared end of the nozzle to provide for the alterationfof thev apex angle of the ejected medium. y

4. A variable directionall ejector mouthpiec according to claim 2, wherein one end of thev nozzle is flared While the valve member is capable of being drawn toward and into the flared end of the nozzle to provide for the alteration of the apex angle ofthe ejected medium.

5. A variable directional ejector mouthpiece for a re extinguishing device, comprising in combination, a rigid nozzle having a flaring end, a valve member of resilient material disposed adjacent to said flaring end,` and means for moving said valve member into vand retaining the same in different positions 'with respect to the flaring-end of the nozzle so as to cause the profile of the valve member to adapt itself to the interior surface of said flaring end and together with the same produce an ejected conical sheet of issuing medium having one of a large range of various apex angles.

6. A variable ldirectional ejector mouthpiece according to claim 5, wherein ribs are disposed upon the interior surface of the flaring end of the rigid nozzle to space the edge of the valve Vmember a slight distance from said surface.

PIERRE JEAN MARCHAUT. 

